Lighting device



FIG. 1 is a corner perspective view of the lighting device in accordance with our new design;

FIG. 2 is a bottom view thereof; and,

FIG. 3 is a side perspective view thereof.

The top, right side, left side, rear and front views of the lighting device are not visible.

The portions of the drawings shown in broken lines represent environmental structure and form no part of the claimed design. 

The ornamental design for a lighting device, as shown and described. 